package com.ysd.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.ysd.entity.Admin;

public class LoginFilter implements Filter{

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse res = (HttpServletResponse) response;
		
		HttpSession session = req.getSession();
		Admin admin = (Admin) session.getAttribute("admin");
		String url = req.getRequestURI();
		if(url.endsWith(".css") || url.endsWith(".js") || url.endsWith(".jpg") || url.endsWith(".png")) {
			chain.doFilter(req, res);
		}else if(url.indexOf("adminlogin.html")>0) {
			chain.doFilter(req, res);
		}else {
			if(admin != null) {
				chain.doFilter(req, res);
			}else {
				res.sendRedirect("adminlogin.html");
			}
		}
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}
